A TDMA system design for Space Station Freedom UHF communications

Author

Grayson, Robert M. ; Sham, Catherine C. ; Gaylor, Kent

Author_Institution

LinCom Corp., Los Angeles, CA, USA

fYear

1991

fDate

23-26 Jun 1991

Firstpage

1118

Abstract

An ultrahigh frequency, time-division multiple-access (TDMA) communication system for voice and data communications between the US Space Station Freedom, its inter-operating elements, and a space shuttle is currently under study. The proposed design will use a fixed-assignment 24 ms frame with 12 slots for voice, data, command, and telemetry and will operate at a burst data rate of 500 kb/s using DPSK modulation. The requirements and design issues associated with the proposed TDMA approach are discussed. Several factors of the frame design are examined and analyzed, including frame and data burst structure, frame acquisition and tracking performance, selection of unique world lengths, bit synchronization preamble length, and guard band sizing

Keywords

phase shift keying; space communication links; space vehicles; time division multiple access; 24 ms; 500 kbit/s; DPSK modulation; TDMA; UHF communications; US Space Station Freedom; bit synchronization preamble length; burst data rate; command; data; data burst structure; frame acquisition; frame design; guard band sizing; inter-operating elements; space shuttle; telemetry; time-division multiple-access; tracking performance; unique word length selection; voice; Bandwidth; Bidirectional control; Data communication; Frequency; NASA; Space shuttles; Space stations; Telemetry; Time division multiple access; UHF communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 1991. ICC '91, Conference Record. IEEE International Conference on

Conference_Location

Denver, CO

Print_ISBN

0-7803-0006-8

Type

conf

DOI

10.1109/ICC.1991.162527

Filename

162527